<template>
  <el-container class="home-container">
      <!-- 头部区域 -->
  <el-header>
      <div><img src="../assets/heima.png" alt="">
      <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
</el-header>
<!-- 页面主体区 -->
  <el-container>
      <!-- 侧边栏 -->
    <el-aside :width="isCollpase ? '64px':'200px'">
        <div class="toggle-button" @click="toggleCollapse">
            |||
        </div>
        <el-menu
      default-active="activePath"
      background-color="#333744"
      text-color="#fff"
      active-text-color="#409EFF" 
      :unique-opened="true" 
      :collapse="isCollpase"
      :collapse-transition = "false"
      :router="true"
      >
      <!-- 一级菜单 -->
      <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
          <!-- 一级菜单模板区域 -->
        <template slot="title">
            <!-- 图标 -->
          <i  :class="iconsObj[item.id] "></i>
          <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>
        <!-- 二级菜单 -->
          <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
                <template slot="title">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{subItem.authName}}</span>
                </template>
          </el-menu-item>

      </el-submenu>
     
    </el-menu>
    </el-aside>
    <!-- 右侧内容主体 -->
    <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
    </el-main>
  </el-container>
</el-container>
</template>

<script>
export default {
    data(){
        return{
            // 左侧菜单数据
            menulist:[],
            iconsObj:{
                '125':'el-icon-user-solid',
                '103':'el-icon-s-home',
                '101':'el-icon-s-goods',
                '102':'el-icon-s-order',
                '145':'el-icon-s-platform'
            },
            // 是否折叠
            isCollpase:false,
            activePath:''
        }

    },
    created(){
        this.getMenuList()
        this.activePath = window.sessionStorage.getItem('activePath')
    },
    methods:{
        logout(){
            window.sessionStorage.clear()
            this.$router.push('/login')
        },
        async getMenuList(){
            const {data:res} = await this.$http.get('menus')
            if(res.meta.status != 200) return this.$message.error(res.meta,msg)
            this.menulist = res.data
       },
    //    点击切换菜单的折叠与展开
       toggleCollapse(){
           this.isCollpase = !this.isCollpase

       },
       saveNavState(activePath){
           window.sessionStorage.setItem('activePath',activePath)
           this.activePath = activePath
       }
    }

}
</script>

<style lang="less" scoped>
.el-header{
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 20px;
    background-color: #373d41;
    >div{
        display: flex;
        align-items: center;
        span{
            margin-left: 15px;
        }
    }
}
.el-aside{
    background-color: #333744;
    .el-menu{
        border-right: none;
    }
}
.el-main{
    background-color: #eaedf1;
}
.home-container{
    height: 100%;
}
i{
    margin-left: 10px;
}
// .icon{
//     margin-left: 10px;
// }
.toggle-button{
    background-color: #4A5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
}
</style>